chore: update download apis to use path #2415

Job	Run time
test / test-dart-vm (3.0.1)	2m 29s
test / test-dart-vm (stable)	2m 32s
native_test / test-dart-native (macos-latest)	3m 51s
native_test / test-dart-native (windows-latest)	3m 45s
ddc_test / test-dart-ddc (3.0.1, chrome)	4m 12s
dart2js_test / test-dart-2js (3.0.1, chrome)	4m 28s
ddc_test / test-dart-ddc (3.0.1, firefox)	4m 40s
dart2js_test / test-dart-2js (3.0.1, firefox)	4m 41s
dart2js_test / test-dart-2js (stable, chrome)	4m 10s
ddc_test / test-dart-ddc (stable, chrome)	3m 55s
dart2js_test / test-dart-2js (stable, firefox)	4m 33s
ddc_test / test-dart-ddc (stable, firefox)	3m 57s
	47m 13s

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